<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>背景图片</title>
    <style>
        /*添加背景图片*/
        body{
            background: url("../新建文件夹 (2)/12.jpg");

        }
    </style>

</head>
<body>

</body>
</html>